Method and controller for exhaust gas temperature control

Details Method and controller for exhaust gas temperature control Method and controller for exhaust gas temperature control

2006-10-31

2006-10-31

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S286000, C060S287000, C060S300000

Reexamination Certificate

active

07127882

ABSTRACT:
Described is a method for controlling a temperature downstream of a catalyst in the exhaust tract of an internal combustion engine including a first control loop in which a first control variable is calculated from a first deviation that is calculated from a first actual value and a first setpoint value and influences an intra-engine heat generation. In the process, the first actual value is determined as a measure of a temperature downstream of the catalyst. The method features a second control loop in which at least one second control variable is calculated from a second deviation that is calculated from a second actual value and a second setpoint value; a temperature upstream of the catalyst being determined as the second actual value. Also described is a controller which controls the sequence of such a method.

REFERENCES:
patent: 6357226 (2002-03-01), Borland
patent: 6598387 (2003-07-01), Carberry et al.
patent: 2003/0221671 (2003-12-01), Bidner et al.
patent: 100 33 159 (2002-01-01), None
patent: 100 56 016 (2002-05-01), None
patent: 1 375 878 (2004-01-01), None

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